\(2^{29}\div2^{26}+3.5^2-2020^0\)
\(=2^{29-26}+3.25-1\)
\(=2^3+75-1\)
\(=8+75-1\)
\(=83-1\)
\(=82\)
\(2^{29}:2^{26}+3\cdot5^2-2020^0\\=2^3+3\cdot25-1\\=8+75-1\\=83-1\\=82\)
229 : 226 + 3 . 52 - 20200
= 23 + 3 . 25 - 20200
= 8 + 75 - 1
= 83 - 1
=82